
Actually Welcome to the Concept of the circles.
It's is universally proven that ratio of circumference and diameter is always π
hence the decimal value is π = 3.14
===> answer is option B.) 3.14
For the division part:

But I think your question differs than this..
Am I right?
as your options do not include 1
3/10 is the answer to 4/5-1/2
Post a full photo of all the other graphs
Answer:
the slope of the line is 2/3x
Step-by-step explanation:
i hope this helps :)